High quality casters for Choice plastic bussing or utility carts. Listing is for a set of four (4) Service Caster Series #05 swivel casters with 4 inch diameter by 7/8 inch wide thermoplastic rubber tread on polyolefin core wheels. These Choice replacement casters have 7/16 inch by 1-3/8 inch grip ring stems. Supports 500 total pounds (lbs.) at 125 pounds (lbs.) per caster. When searching for a reliable and durable solution to your Choice Bussing utility cart replacement caster needs, consider Service Caster Series 05 grip ring thermoplastic rubber wheel casters. The Service Caster Series #05 features non-marking thermoplastic rubber wheels with easy maneuverability for a smooth and quiet ride. The zinc plated finish provides durability under any condition. These versatile casters are ideal for a wide range of applications, but are commonly used on Choice Bussing utility carts. Service Caster is unsurpassed in quality, reliability, and excellent customer service. Count on us to move you forward.